Could some of us have had COVID-19 and not known it?

On February 19th, I came down with a sudden fever, aches, and a cough. Everything hurt, and I was kicking myself for having missed my flu shot this year.

The cough was brutal, non-productive, and dragged on for some time. On February 25th I called my doctor to order a new asthma inhaler because it had been years since I had last had one. My breathing was a bit scary, and the cough didn’t do anything. By March 2nd, the cough appeared to be mostly gone.

Anyway, I’ve been joking that I might have already had covid. But with the news that California found evidence that it had spread in the US earlier than previously assumed, I’m starting to wonder if I might have actually had this (even though I’m all the way in MA).

Any chance I may have had this? Are there any reliable tests available for antibodies? And is it true that you still may be able to catch it again?

(Hey doc in a caravan)